Need help with Pioneer P420 and line-in plugs.

[Sinx]

Hi there,
I would like to connect my Pioneer P420 to the TV out.
Where's the difficult ? Well, Pioneer-P420 doesn't have any line-in plugs !
It has just a 'phono-in' plug.

This HiFi is composed by two blocks:
- PDC-P420 Tape deck and CD player
- SX-P420 AM/FM Radio and Amplifier
These two units are conneced togheter with a flat cable on the back.

Is there anybody that have the schematic of these units ?

My idea is to put a switch (i.e. on the CD-out lines) and connect
them to my TV out...

Thanks in advance for any help !

Jack